Principal Accounting Policies - Value-added tax and related surcharges (Details) - CNY (¥) ¥ in Millions |
12 Months Ended | 102 Months Ended | ||
|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2027 |
|
| Value-added tax and related surcharges | ||||
| Applicable rate of VAT (in percent) | 6.00% | 6.00% | 6.00% | |
| Education Surcharge Tax Rate On Value Added Tax Paid | 3.00% | |||
| VAT and related surcharges | ¥ 50.7 | ¥ 54.6 | ¥ 49.5 | |
| Minimum | ||||
| Value-added tax and related surcharges | ||||
| Urban maintenance and construction tax rate (in percent) | 5.00% | |||
| Local education surcharge tax rate on value added tax paid | 1.00% | |||
| Maximum | ||||
| Value-added tax and related surcharges | ||||
| Urban maintenance and construction tax rate (in percent) | 7.00% | |||
| Local education surcharge tax rate on value added tax paid | 2.00% | |||
| Scenario forecast | ||||
| Value-added tax and related surcharges | ||||
| Applicable tax rate of cultural development fee for net advertising revenues | 1.50% | |||